– The new viewer is based on/similar to the WebExtension https://github.com/april/certainly-something.– Contrary to the addon, there is no information about the handshake at the moment.– The release of FF 71 is scheduled for Dec 12, 2019.

– it requires the S@T Browser on the targeted phone, and a mobile operator allowing special SMS– many details are missing– mobile operators can remotely uninstall S@T Browser; so this perfectly shows that you can't "take back control" of your phone by just installing some LineageOS on it

– WKD is also available for external keys now– DANE is also available for custom domains– Besides, they added HTTP headers (Expect-CT, Public-Key-Pins-Report-Only), DNS CAA, and monitoring (e.g., TLSRPT)– There will be an independent security audit of all Proton apps

– each record contained a unique Facebook ID; some records listed the user's name, gender, and location by country– Facebook: "This data set is old and appears to have information obtained before we made changes last year to remove people’s ability to find others using their phone numbers"

– Enhanced Tracking Protection will be turned on by default; default standard setting for this feature now blocks third-party tracking cookies and cryptominers– support for the Web Authentication HmacSecret extension via Windows Hello– various security fixes

Changing the user agent header doesn't change another problem: The Privacy Browser always sends X-Requested-With: com.stoutner.privacybrowser.standard, leaking its identidy. So it doesn't matter which one you choose.

TL;DR: Use ECC-based keys (Ed25519, Curve25519) as they are the future-default of GPG, smaller and faster than RSA, and Curve25519 is widely used by many different projects. If you use modern E2EE instant messengers for personal communication, there is likely no need to switch to GPG.